I think the Frathli mk2 was part of the kilrathi fleet (it's been more then 10 years, they should have somewhat of a fleet) In response to the capship dismantling after the war, when melek said they had all been dismantled I think he might have meant main battle fleet ships, ships belonging to individual warlords (ie Ragark) might have been retained because they did not belong to the main fleet. Ragark had quite a considerable fleet, although it sounded like he did not have the means to build new ships, just a refitting station. Also warships could have been retained because of confed's feeling bad. you never know.
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"It's not my revolution if I can't dance to it!" - Emma Goldman, Anarchist and Feminist